Vamp-folding machine.



Patented Apr. 13, 1909.

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B. A. SLOCUM.

VAMP FOLDING MACHINE.

` APPLIOATION FILED Nov. 1s. 1904. 918,383,

mununnW u q B. A. SLOCUM. VAMP FOLDING MACHINE. APPLIOATION FILED Nov.1s, 1904.

Patented Apr. 13, 1909.

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n. c. THE mmm: PETERS co., WASHINGTON.

B. A. SLOGUM.

VAMP FOLDING MACHINE.

APPLIGATION HLBn Nov. 15, 1904.

Patented Apr. 13, 1909.

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APPLICATION FILED NOV.15, 1904. 918,883. Patented Apr. 1909.

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`UNITED STATES PATENT OFFTCE.

BENJAMIN A. SLOCUM, OF LYNN, MASSACHUSETTS, ASSIGNOR TO BOSTON MACHINE WORKS COMPANY, OF LYNN, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

VAIVIP-FOLDING MACHINE. i

Specification of Letters Patent.

Patented April 13, 1909.

Application filed November 15, 1904. Serial No. 232,781.

T o all whom 'it 'may conce-m:

Beit known that l, BENJAMiN A. SLoeUM, of Lynn, county of Essex, and Commonwealth of Massachusetts, have invented certain Improvements in Vamp-Folding Machines, of which the following, read in conneetion with the accompanying drawings, is

a specification.

. This yinvention relates to machines intended for folding the rentrant curved inner edges of vamps of boots and shoes.

The novelty of the invention consists in construction and working operations of the folder members whereby it is specially adaptedfor folding the rentrant or curved edge of shoe vamps, and in the actuating mechanism for the folder members and in the combination of a plurality of folding elements arranged in sets of varying size with a single actuating mechanism and supporting frames therefor which are movable relatively for placing the actuating mechanism and sets of folding elements in eoperative work position at different times.

It also relates to matters of construction all of which are more specifically described hereinafter.

Of the drawings, Figure 1 is a front elevation showing the machine partly in section. Fig. 2 shows a detail detached. Yfig. 3 shows the machine with folder elements and yoke S removed. iI ig. 4 shows the table plate and folder members detached. l'fig. 5 shows the former plates detached. lig. 6 is a plan view with a portion of the yoke removed showing the folding plates, and lfig. 7 is a sectional detail.

The machinecomprises a frame B suitably arranged with uprights l) to support the shaft 40 2, Onthe shaft 2 are cams 3, 4, 5, 6, 7, 8 and concentric with the shaft 2 is a part 10 which is heldzagainst rotation, it being for that purpose clamped between the cap-plates 12 and arms 14, k14 by screws (not shown). This ly part 10 serves for an axle on which to support the hubs 20, 22 which carry duplicate armradii of which two only 24, 26 will be described. The arms 24, 26 support a frame A which carries the yoke S and the operative parts operated through rods 28, 30, 32, 34

which to that end are suitably arranged in the part 10 for movement by the cams 4, 5, 6, 7, res eetively.

The yoke S is supported en rods 45, 48 which slide in the frame A, thereby permitting movement toward and from the frame A. On the rods 45, 4S are studs 50, 52 in line to be engaged by the slides 54, 56, which being arranged to slide in the standards 16, 1S carry rollers 40, 42 engaged respectively with the cams 3-8 whereby the necessary lowering movements of the yoke S are effected. Such movements are effected against the tension of springs 44, 46 which operate for lifting the yoke S whenever the cams 3, 8 permit.

YFrom the foregoing description it will be understood how the different sets of mechanisms comprising the yoke S, frame A and the folding elements mounted thereupon may be supported on the arm radii of the hubs 20, 22 and each set being brought to the working position by the operator when required for use. rlhe connecting parts which bear on rods 28, 30, 32, 34 are provided with antifriction rollers, as shown, to facilitate this movement. The different sets of folding elements vary in size only, so that a description of one set only is presented.

The folding elements include plates 60, 62, 64 66, 68. The table plate 60 has an inwardly curved edge contour 7 0 which corresponds with the reentrant curve or line of fold to be given the material operated upon. lt is fixed upon the frame A and supports the vamp to be folded. The former comprises plate 62 having the curved edge contour 72 which corresponds to a section approximately one half of the edge contour 70 of plate 60, and the coperating plate 64 having the curved edge contour 74 which corresponds with a section approximately the other half of the edge contour 70.

ln operation of the machine, the material being placed upon plate 60 with its edge projecting over the line 7 0 and against the ribs X, X the former plates 62, 64 are then pressed down upon the material. To this end, the plates 62, 64 are supported res ectively on pins 80, S2, 84, 86 and carrie by l the yoke S, the plates being relatively adjusted so that as the yoke S is lowered by cams 8, 8, the plates 62, 64 will position upon the material with their edge faces 72, 74 in the same vertical plane with the edge face 70 of said plate 60. The edge part of the material will now occupy a position over the edge of the underlying folder plates 66, 68, and will be upturned against the edges 72, 74 by uplifting the plates 66, 68 which is done in the next operation of the machine.

The folder member 66 has a curved edge contour 76 which is contour to approximately one half of the edge contour 70 and the folder member 68 has a curved edge contour 78 which is contour to approximately the other half of the edge contour 70. The folder member 66 is fixed upon the rod 90 which is mounted in the blo-ck 92, such block is arranged to slide in the frame A for purposes stated hereinafter. On the rod 90 is a coiled spring 94 which is contracted between the block 92 and shoulder on the rod 90 and operates to hold the rod 90 with its bottom end pressed on the rod 80. ln like inannei'the folder member 68 is supported on the rod 96 which is mounted in the slide 98 and depressed on the rod. 32 by a spring 200. Said rod 96 slide 98 and spring 200 being constructed and arranged like the rod 90 slide 92 and s ring 94 and are not therefore shown in detail.)

lt will now be understood how the folder members 66, 68 are lifted by the cams 5, 6 respectively operating through rods 30, 60, and 82, 96. The members 66, 68, having been uplifted, the next operation is to advance tliese members for foldingand wiping the material over the former plates 62, 64, and herein resides an important feature of this invention. In this connection the members 66, 68 are caused to advance in divergent paths running acutely angular to the median line of the former. The advance movement of slide 92 and consequently the folder member 66 is effected by the cam 4 operating through the rod 28 and the toggle 206, such toggle being pivoted at one end to the slide 92 and by its other end to the frame A. The advance of the slide 92 is made against the coiled spring 208 whereby the slide is moved to the rearward position again whenever the cam 4 permits. in like manner the slide 98 and consequently the folder 68 is advanced by the cam 7 operating through the rod 84 and toggle 210, such advance is against the coiled spring 2X whereby the slide is returned to the rear position whenever the cam 7 permits.

After the members 66, 68 have been advanced for wiping the material over the former it becomes necessary for drawing the former plates 62, 6.4 from under the overwiped material. To this end a mechanism is employed in connection with each of the former plates, such mechanisms being duplicates, and one set only is described herein.

The pins 80, 82 carrying the former plate 62 aie mounted in a slide 226 (Fig. 2l which slide is arranged for movement endwise in the yoke S. Pivoted on the yoke S is a rock lever 228 of the bell-crank type. One arm of this lever engages the slide 226 and the other arm bears upon the pin 230 which is arranged in the yoke S for movement endwise against one end of the lever 228 causing the other end of the lever to engage the slide 226 and moving it against the spring 221. lt will now be understood how, as the yoke S moves down, the pin 230 becomes engaged wi th the work and uplifting raises one arm of the lever 228, thereby causing the other arm to move the slide 226 which carries the pins 80, 82 and consequently the plate 62 forward, thereby removing the plate 62 from under the overturned material. A duplicate mechanism operated by the pin 800 will simultaneously remove the plate 64, whereupon the yoke S descending farther bears upon the ribs X, X, thereby clamping and setting the folded material between the folder plates 66, 68 and bed-plate 60. The cams 3, 8 thereupon release the yoke S which is lifted by springs 44, 46, the folding elements being simultaneously returned to. their positions for beginning another opere ation.

lt will be understood that in the advance movement of the folder members 66, 68 in divergent paths for wiping over the material these plates become spaced apart, and I have provided the auxiliary plate 306, which is mounted on the yoke S in position for oper-` ating between the folder members to press the material at this point.

Having now described my invention I claiml. The combination with two frames, a shaft journaled in bearings on one of said frames, a yoke carried by the other frame, cams secured on the shaft, standards, slides connected with the standards and'controlled by cams on the shaft for moving the yoke in one direction, of a table, folder plates having sliding connection in two different directions with the yoke, folder members carried by one of the frames and moved in two different directions at right angles to each other by cams on the shaft.

2. The combination with a frame and shaft revolubly supported therein and carrying cams, of a folder comprising the fixed table 60, folder plates 62 and 64 located above said table, means for raising and low-y ering said folder plates, and means for moving them edge-wise, folder members 66 and 68 raisedand loweredby one set of cams on tion, a shaft, rods `for moving said parts in the shaft, and moved edge-wise by anothel` l one direction and toggles 'for sliding them in set. another direction.

y 3. The combination With a frame, a yoke Signed by me at Lynn, lvlassachusetts, 5 andhmeans for mliving the yokepostvbelly this l2 day of Nov. 1904.

vWit res ect to t e frame, ot' a ced te e, -T T l Y Y folder nlembers, folder plates, the letter i BLBJAMH A' bLOCUM' yieldingly connected with the yoke, means W'itnesses:

for sliding said folder plates edge-wise when A. M. TUTTLE, 10 they have reached the predetermined posi- I C. B. TUTTLE. 

